Exactly same for me....Usually only a Friday driver to work (only 6 miles each way) and then a very light amount of weekend driving if the weather is perfect. Remember, everything gets washed Saturday morning!
After cleaning out the throttle body and improving my gas mileage and idle substantially (went from ~13MPG to ~20+), the gas seems to stay in the tank better too.
Oh, and there really is not "winterization" down here so as long as the weather is good then we go! The top doesn't come down usually unless above 70 though otherwise it just looks like I will freeze.
PS - I actually do grin when I realize that when I leave my lab, my Box is waiting for me instead of my Tahoe.